Corrosion protection for actuators

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A new TÜV certificate confirms that AUMA’s electric actuators have met the requirements of EN ISO 12944-6 for corrosivity categories C5-M long (marine, coastal and offshore areas) and C5-I long (industrial areas with high humidity and aggressive atmospheres). Previous tests had already proved the high corrosion resistance of the advanced two-layer powder coating AUMA introduced a few years ago. The latest certificate confirms that the fully-assembled actuators, including all non-powder-coated metallic parts such as shafts and screws, withstand corrosion equally well.

Standard AUMA SA and SQ actuators with AC or AM integrated controls meet the requirements of corrosivity category C5-M long, without any extra measures and cost. C5-I long is available as an option. To achieve this C5-M certification, the products had to undergo a salt mist test (EN ISO 9227:2012) for 1,500 hours and a constant humidity test with condensation (EN ISO 6270-2:2005) for 720 hours. For C5-I certification, the devices had to additionally withstand 30 cycles of a condensation alternating climate test containing sulfur dioxide (EN ISO 3231). Following the tests the AUMA products showed no signs of rust.

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